Widen default splay width to content interval

lib/fic_tracker/models/story.rb

@@ -228,7 +228,7 @@ module FicTracker::Models
       # chapters.each(&:refresh_content!)
     end
 
-    def apply_splay!(max: 1 * 60 * 60)
+    def apply_splay!(max: CONTENT_REFRESH_INTERVAL)
       self.last_metadata_refresh += rand(0..max)
       self.last_content_refresh += rand(0..max)
     end